A 25-ton blast door closing sounds like the end of the world — especially if you’re inside the shelter it’s protecting. There you are, walking down a long, quiet, dimly lit hallway, when you hear a loud bang followed by an unnerving silence. That door can’t be opened from the outside, and the sound of it closing makes you feel completely disconnected from the rest of the world. For decades, one of these doors lay hidden in West Virginia, protecting a state-of-the-art fallout shelter and a web of secrecy. In 1959, construction began on a new wing of the Greenbrier Hotel, a beautiful, upscale resort with rolling green fields and opulent white buildings. But the wing was really a front for the shelter, which was built underneath the hotel…
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